Textile fabric



Patented Fete. 3%34 TEX FABEHG Henry Dreyfus, London, England NoDrawing. @riginal application April 15, 1930), Serial No. 444,619, andin Great Britain April 29, 1929.. Divided and t application April 6,1932. Serial No. 603.6%

8 Glaims.

This application is a divisional application from application S. No.444,619 filed 15th April, 1930, and the invention relates to theproduction of textile fabrics, and more particularly woven fabrics.

The object of the invention is to simplify or improve the production ofcrepe-like or figured" or pebbled efiects in woven fabrics.

The method of producing crepe fabrics as ordinarily practised'consistsin employing as weft or both weft and warp two kinds of thread, eachhighly twisted, the twist of one being in the opposite direction to thatof the other. These two threads alternate with each other in the fabric,the usual arrangements being either one thread of one kind alternatingwith a thread of the other kind, or an alternation of pairs of likethreads, and in either of these arrangements, each weft thread iscontained in a separate shed. After the fabric is woven, it is subjectedto shrinking, and the consequent contraction of the high twist threadsproduces the crepe effect required.

According to the present invention, crpe or like eifects are produced bythe use of a. composite thread consisting solely of two threads, atleast one of which is highly twisted. Preferably both are highlytwisted, but in opposite directions. The high twist threads may bedoubled with low twist threads before their association into thecomposite threads.

For use as weft, the two threads may be simply parallel wound on to aweft plrn or other weft package. They may be sized together beforewinding, if desired. The two threads may be doubled together, this formof composite thread being capable of use both as a weft and as a warpthread.

A preferred form of composite thread, capable -of use both as weft andwarp, consists of two threads highly twisted in opposite directions, anddoubled together. The doubling should be light in comparison with thedegree of twist imparted to each thread.

The invention may be used for the production of crepe-like effects inall kinds of, materials. Thus, the component threads may consist offilaments of cellulose acetate or other organic derivatives ofcellulose, which materials do not give good crpe efiects by the normalmethods employed. Likewise, threads of natural silk, cotton, wool, orartificial silk of the reconstituted cellulose type may be used, thecrepe eifect being evident immediately on weaving the fabric. Ifdesired, shrinking may be resorted to to enhance the crping 01'thefabric.

effects, since the effect produced does not depend on the use of twokinds of weft thread. It is, however, within the scope of the inventionto use two kinds of composite thread, of the same or differentcomposition, one thread being doubled in the opposite direction to theother, in which case, a two-box loom is necessary for the weaving of thefabric. Again, shrinking of the fabric may be resorted to, particularlywhen the fabrics consist of or contain materials which are normallysubjected to shrinking in ordinary crping processes.

The following are given as examples of composite threads which areparticularly suitable for producing crepe efiects in fabrics ofcellulose acetate, but it is to be understood that the invention is notin any way limited thereby.

Example I A composite thread is formed from two '75 denier threads ofcellulose acetate, one having 55. turns per inch of left-hand twist andthe other 55 turns per inch of right-hand twist. The two threads aredoubled together with 10- 12 turns per inch in either direction.

Example II A composite thread consisting of a 100 denier thread ofcellulose acetate having 60 turns per inch of right-hand twist and adenier cellulose acetate thread having 40 turns per inch of left-handtwist, the two threads being doubled together with 20 turns per inch ofleft-hand twist.

This thread may be used alone in a single-- box loom, or in a two-boxloom alternately with another composite thread consisting of a 100denier cellulose acetate thread having 60 turns per inch of left-handtwist and a 70 denier cellulose acetate thread having 40 turns per inchof right-hand twist, doubled together with 20 turns perinch ofright-hand twist.

The threads described in the above examples may be used as weft or warpalone or as both warp and weft to give excellent crepe-like efi'ects.Where the oppositely twisted threads of the sec- Eli!) end example areused, it is convenient to insert two picks of one thread alternatelywith two picks of the other thread.

What I claim and desire to secure by Letters Patent is:

l. A textile filling strand comprised of a pl rality of individuallytwisted ends temporarily maintained in parallel but untwisted relationby a removable bonding agent.

2. A textile strand comprising two ends of opposite twist temporarilymaintained in parallel but untwisted relation by a removable bondingagent.

3. A textile filling strand comprised of a p1u-. rality of individuallytwisted ends which are sized together so as to be temporarily maintainedin parallel but untwisted relation.

4. A textile strand comprising two ends of opposite twist which aresized together so as to be temporarily maintained in parallel butuntwisted relation.

5. A textile filling strand comprised of a plurality of individuallytwisted ends of cellulose memes acetate which are sized together so asto be temporarily maintained in parallel but nntwisted relation.

6. A textile strand comprising two cellulose acetate ends of oppositetwist which are sized together so ,as to be temporarily maintained inparallel but untwisted relation,

l. A composite thread for use in the production of fabrics havingcrepe-like or pebbled effects, said thread consisting solely of twothreads both of which are highly twisted, but in opposite directions,said threads being sized together and parallel wound on to a weftpackage.

8. A crepe fabric comprising a series of warp strands and a series ofseparate filling strands of alternately .opposite twist. each shed ofwarp strands embracing two filling strands of opposite twist, the twofilling strands in each warp shed being separate from one another andnon-intertwisted and maintained in parallel relationship by a removablebonding agent.

HENRY DRF SZFUS.

